Motor controller, heat dissipation system and vehicle

Abstract

The utility model relates to a kind of motor controllers, including shell and control assembly suspended in the cavity of shell, control assembly includes radiating fin, embedded PCB module connected in the lower side of radiating fin and multiple power chips encapsulated in embedded PCB module, cooling liquid inlet and cooling liquid outlet are provided on shell, the position of cooling liquid inlet is higher than the position of control assembly, the position of cooling liquid outlet is lower than the position of control assembly.The utility model also proposes a kind of heat dissipation system and vehicle.The utility model improves the heat dissipation performance of motor controller, helps to improve the performance release of motor controller.The utility model improves the heat conduction of heat dissipation motor controller, helps to improve motor controller thermal management consistency.

Description

Technical Field

[0001] This utility model relates to the field of motor controller technology, specifically to a motor controller, a heat dissipation system, and a vehicle. Background Technology

[0002] The power modules in motor controllers typically use cooling water channels for heat dissipation. This cooling method has the following technical problems: Using cooling channels for heat dissipation has the problem of insufficient heat dissipation efficiency; Cooling channels typically need to cool multiple power modules. The coolant in the channels carries heat from upstream modules to downstream modules, causing downstream modules to become the weakest link in cooling performance and negatively impacting overall cooling efficiency. Power modules located downstream of the cooling channel operate at lower cooling power compared to those upstream, affecting consistent reliability and resulting in wasted design and functionality. Utility Model Content

[0003] The purpose of this invention is to provide a motor controller, a cooling system, and a vehicle to alleviate or eliminate at least one of the aforementioned technical problems.

[0004] The present invention discloses a motor controller comprising a housing and a control component suspended in the inner cavity of the housing. The control component includes heat dissipation fins, an embedded PCB module connected to the lower side of the heat dissipation fins, and a plurality of power chips packaged in the embedded PCB module. The housing is provided with a coolant inlet and a coolant outlet, the coolant inlet being positioned higher than the control component and the coolant outlet being positioned lower than the control component.

[0005] Optionally, the coolant inlet is located at the top of the left side wall of the housing, and the coolant outlet is located at the top of the right side wall of the housing.

[0006] Optionally, the central axis of the coolant inlet extends in the left-right direction, and the central axis of the coolant outlet extends in the left-right direction.

[0007] Optionally, the left end of the control component is connected to the left side wall of the housing, there is a first gap between the control component and the top wall of the housing, a second gap between the control component and the bottom wall of the housing, a third gap between the control component and the right side wall of the housing, a fourth gap between the control component and the front side wall of the housing, and a fifth gap between the control component and the rear side wall of the housing.

[0008] Optionally, the left end of the control component is connected to a metal external port, and the control component is fixedly connected to the left side wall of the housing through the metal external port.

[0009] Optionally, the heat dissipation fins include a main body covering the upper side of the embedded PCB module and an extension portion extending out of the embedded PCB module in a direction perpendicular to the vertical direction.

[0010] Optionally, the control component may further include a surface mount component layer mounted on the underside of the embedded PCB module.

[0011] This utility model also proposes a heat dissipation system, including a heat exchanger, a pump, and a motor controller as described in any one of the above, wherein the motor controller, the heat exchanger, and the pump are connected in a circulation loop through pipes.

[0012] Optionally, the heat dissipation system may also include a drying filter disposed between the coolant output end of the heat exchanger and the coolant inlet of the motor controller.

[0013] This utility model also proposes a vehicle that includes the above-described cooling system.

[0014] This invention improves the heat dissipation performance of the motor controller, thus enhancing its performance release. It also improves the heat distribution uniformity of the motor controller, contributing to consistent thermal management. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the motor controller described in some embodiments; Figure 2 This is a schematic diagram of the heat dissipation system described in some embodiments.

[0016] Among them, 1-motor controller, 2-heat exchanger, 3-dryer filter, 4-first pipe, 5-second pipe, 6-third pipe. 11-Housing, 12-Inner cavity, 13-Coolant inlet, 14-Coolant outlet, 15-Embedded PCB module, 16-Power chip, 17-Heat sink fins, 18-Surface mount component layer, 19-Metal external connector, 171-Main body, 172-Extend portion. Detailed Implementation

[0017] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0019] like Figure 1 The motor controller 1 shown includes a housing 11 and a control component suspended in the inner cavity 12 of the housing 11. The control component includes heat sink fins 17, an embedded PCB module 15 connected to the lower side of the heat sink fins 17, and a plurality of power chips 16 encapsulated in the embedded PCB module 15. The housing 11 is provided with a coolant inlet 13 and a coolant outlet 14. The coolant inlet 13 is positioned higher than the position of the control component, and the coolant outlet 14 is positioned lower than the position of the control component.

[0020] By adopting the above technical solution, the inner cavity 12 of the housing 11 can accommodate coolant, allowing the control components suspended in the inner cavity 12 to be completely immersed in the coolant, resulting in higher thermal conductivity and better heat dissipation. The heat dissipation of the multiple power chips 16 is essentially consistent, exhibiting good heat uniformity and avoiding the downstream bottleneck effect of the heat dissipation channels in existing technologies, thus improving the thermal management capability of the motor controller 1. Using the above-described motor controller 1 improves both the heat dissipation performance and the heat uniformity of the heat-dissipating motor controller 1.

[0021] In the above technical solution, by setting the heat dissipation fins 17 and reasonably setting the position of the coolant inlet 13, the coolant input into the coolant inlet 13 can exchange heat with the heat dissipation fins 17 more timely and fully, which helps to further improve the heat dissipation performance of the motor controller 1.

[0022] In the above technical solution, by reasonably setting the relative positions of the coolant inlet 13 and the coolant outlet 14, the coolant can exchange heat with the control components more fully, which helps to further improve the heat dissipation performance of the motor controller 1.

[0023] In a specific implementation, the housing 11 is formed by a top wall, a left side wall, a right side wall, a front side wall, a rear side wall, and a bottom wall, and the inner cavity 12 of the housing 11 can accommodate coolant.

[0024] In some embodiments, the coolant inlet 13 is located at the top of the left side wall of the housing 11, and the coolant outlet 14 is located at the top of the right side wall of the housing 11. By adopting the above technical solution and reasonably setting the positions of the coolant inlet 13 and the coolant outlet 14, the coolant can exchange heat with the control components more fully, which helps to further improve the heat dissipation performance of the motor controller 1.

[0025] As a preferred example, the central axis of the coolant inlet 13 extends in the left-right direction, and the central axis of the coolant outlet 14 also extends in the left-right direction. Using the above technical solution, the coolant flows from the coolant inlet 13 into the inner cavity 12 to the right, allowing for more thorough heat exchange with the fins of the heat dissipation fins 17.

[0026] In some embodiments, the left end of the control component is connected to the left side wall of the housing 11. A first space exists between the control component and the top wall of the housing 11; a second space exists between the control component and the bottom wall of the housing 11; a third space exists between the control component and the right side wall of the housing 11; a fourth space exists between the control component and the front side wall of the housing 11; and a fifth space exists between the control component and the rear side wall of the housing 11. By forming these five spaces, sufficient contact between the control component and the coolant can be ensured. The first and third spaces constitute the main flow space for the coolant, while the second, fourth, and fifth spaces constitute the secondary flow space for the coolant.

[0027] In some embodiments, a metal external port 19 is connected to the left end of the control component, and the control component is fixedly connected to the left side wall of the housing 11 via the metal external port 19. The metal external port 19 provides a fixing function for the control component and also provides a port for connecting to the outside.

[0028] In specific implementation, the metal external port component 19 can be made of copper. An installation port that mates with and connects to the metal external port component 19 can be provided on the left side wall of the housing 11. The metal external port component 19 and the control component can be fixedly connected by welding.

[0029] In some embodiments, the heat sink fins 17 include a main body 171 covering the upper side of the embedded PCB module 15 and an extension 172 extending out of the embedded PCB module 15 in a direction perpendicular to the vertical direction. The extension 172 can improve the heat dissipation capacity of multiple power chips 16.

[0030] In some embodiments, the control component further includes a component mounting layer 18 mounted on the underside of the embedded PCB module 15. Mounting components on the underside of the embedded PCB module 15 helps improve space utilization and reduce the design complexity of the control component.

[0031] The use of the motor controller 1 described above facilitates the adoption of an embedded PCB solution and helps to simplify the design of the motor controller 1.

[0032] like Figure 2 As shown, this utility model also proposes a heat dissipation system, including a heat exchanger 2, a pump, and a motor controller 1 as described in any of the above-mentioned embodiments. The motor controller 1, heat exchanger 2, and pump are connected in a circulation loop via pipes. The pump drives the coolant to circulate, and the heat exchanger 2 dissipates the heat absorbed by the coolant from the motor controller 1 to the external environment to maintain the normal operating temperature of the coolant. In specific implementations, the heat exchanger 2 can be an existing product such as an air-cooled radiator, and the pump can be integrated into the heat exchanger 2.

[0033] In some embodiments, the heat dissipation system further includes a drying filter 3 disposed between the coolant output end of the heat exchanger 2 and the coolant inlet 13 of the motor controller 1. The drying filter 3 is used to remove moisture and impurities generated during the circulation process due to seepage and seepage.

[0034] In practical implementation, the dryer filter 3 can filter impurities by incorporating filter elements, such as fiber filter elements or ceramic filter elements. The dryer filter 3 can also absorb moisture by incorporating a desiccant, which typically has a microporous structure capable of absorbing moisture, such as a molecular sieve.

[0035] In specific implementation, the motor controller 1 is connected to the heat exchanger 2 through the first pipe 4, the heat exchanger 2 is connected to the dryer filter 3 through the second pipe 5, the dryer filter 3 is connected to the motor controller 1 through the third pipe 6, and the pump is integrated in the heat exchanger 2.

[0036] In practical implementation, the coolant can be a single-phase electronic immersion fluid, requiring high pressure resistance, good thermal conductivity, physicochemical stability, and a boiling temperature higher than the operating temperature of the motor controller 1. For example, mineral oil or FC-40 electronic fluorinated fluid can be used as the coolant.

[0037] This utility model also proposes a vehicle that includes the above-described cooling system.

[0038] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicates that a specific feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0039] In the description of this utility model, it should be understood that the terms "up," "down," "left," and "right," etc., indicate directions based on the attached... Figure 1 The coordinate system in the diagram represents the orientation only for the convenience of describing the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Claims

1. An electric motor controller characterized by, The device includes a housing and a control component suspended within the housing cavity. The control component includes heat dissipation fins, an embedded PCB module connected to the lower side of the heat dissipation fins, and multiple power chips packaged in the embedded PCB module. The housing is provided with a coolant inlet and a coolant outlet. The coolant inlet is located higher than the control component, and the coolant outlet is located lower than the control component.

2. The motor controller according to claim 1, characterized in that, The coolant inlet is located at the top of the left side wall of the housing, and the coolant outlet is located at the top of the right side wall of the housing.

3. The motor controller according to claim 1, characterized in that, The central axis of the coolant inlet extends in the left-right direction, and the central axis of the coolant outlet extends in the left-right direction.

4. The motor controller according to claim 1, characterized in that, The left end of the control component is connected to the left side wall of the housing. There is a first gap between the control component and the top wall of the housing, a second gap between the control component and the bottom wall of the housing, a third gap between the control component and the right side wall of the housing, a fourth gap between the control component and the front side wall of the housing, and a fifth gap between the control component and the rear side wall of the housing.

5. The motor controller according to claim 1, characterized in that, The left end of the control component is connected to a metal external port, and the control component is fixedly connected to the left side wall of the housing through the metal external port.

6. The motor controller according to claim 1, characterized in that, The heat dissipation fins include a main body covering the upper side of the embedded PCB module and an extension portion extending out of the embedded PCB module in a direction perpendicular to the vertical direction.

7. The motor controller according to claim 1, characterized in that, The control component also includes a component layer mounted on the underside of the embedded PCB module.

8. A heat dissipation system, characterized in that, It includes a heat exchanger, a pump, and a motor controller as described in any one of claims 1-7, wherein the motor controller, the heat exchanger, and the pump are connected in a circulation loop via pipes.

9. The heat dissipation system according to claim 8, characterized in that, It also includes a drying filter disposed between the coolant output end of the heat exchanger and the coolant inlet of the motor controller.

10. A vehicle, characterized in that, Includes the heat dissipation system as described in claim 8 or 9.

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